In addition to Weibo, there is also WeChat
Please pay attention
WeChat public account
Shulou
2025-04-08 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Network Security >
Share
Shulou(Shulou.com)06/01 Report--
1. Check if the remote port is open to bash:
Echo > / dev/tcp/8.8.8.8/53 & & echo "open"
two。 Let the process go to the background:
Ctrl + z
3. Move the process to the foreground:
Fg
4. Produces a random hexadecimal number, where n is the number of characters:
Openssl rand-hex n
5. Execute a command in a file in the current shell:
Source / home/user/file.name
6. Intercept the first five characters:
${variable:0:5}
7.SSH debug mode:
Ssh-vvv user@ip_address
8.SSH with pem key:
Ssh user@ip_address-I key.pem
9. Grab the complete website directory structure with wget and store it in the local directory:
Wget-r-no-parent-reject "index.html*" http://hostname/-P / home/user/dirs
10. Create more than one directory at a time:
Mkdir-p / home/user/ {test,test1,test2}
11. List the process trees that include child processes:
Ps axwef
twelve。 Create a war file:
Jar-cvf name.war file
13. Test the hard drive write speed:
Dd if=/dev/zero of=/tmp/output.img bs=8k count=256k; rm-rf / tmp/output.img
14. Test the hard drive read speed:
Hdparm-Tt / dev/sda
15. Get the md5 hash of the text:
Echo-n "text" | md5sum
16. Check the xml format:
Xmllint-noout file.xml
17. Extract tar.gz to a new directory:
Tar zxvf package.tar.gz-C new_dir
18. Use curl to get HTTP header information:
Curl-I http://www.example.com
19. Modify the timestamp of a file or directory (YYMMDDhhmm):
Touch-t 0712250000 file
20. Use the wget command to perform the ftp download:
Wget-m ftp://username:password@hostname
21. Generate a random password (16 characters long in the example):
LANG=c
< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c${1:-16};echo; 22.快速备份一个文件: cp some_file_name{,.bkp} 23.访问Windows共享目录: smbclient -U "DOMAIN\user" //dc.domain.com/share/test/dir 24.执行历史记录里的命令(这里是第100行): !100 25.解压: unzip package_name.zip -d dir_name 26.输入多行文字(CTRL + d 退出): cat >Test.txt
twenty-seven。 Create an empty file or empty an existing file:
\ > test.txt
twenty-eight。 Synchronize time with Ubuntu NTP server:
Ntpdate ntp.ubuntu.com
twenty-nine。 Use netstat to display all tcp4 listening ports:
Netstat-lnt4 | awk & apos; {print $4} & apos; | cut-f2-d: | grep-o & apos; [0-9] * & apos
30.qcow2 image file conversion:
Qemu-img convert-f qcow2-O raw precise-server-cloudimg-amd64-disk1.img\ precise-server-cloudimg-amd64-disk1.raw
thirty-one。 Run the file repeatedly to show its output (the default is once every 2 seconds):
Watch ps-ef
thirty-two。 List of all users:
Getent passwd
33.Mount root in read/write mode:
Mount-o remount,rw /
thirty-four。 Mount a directory (this is the case where links cannot be used):
Mount-- bind / source / destination
thirty-five。 Dynamically update DNS server:
Nsupdate
< 1048576) print $7/1048576 "MB "$9 }' | sort -n -u | tail 38.显示剩余内存(MB): free -m | grep cache | awk '/[0-9]/{ print $4" MB" }' 39.打开Vim并跳到文件末: vim + some_file_name 40.Git 克隆指定分支(master): git clone git@github.com:name/app.git -b master 41.Git 切换到其它分支(develop): git checkout develop 42.Git 删除分支(myfeature): git branch -d myfeature 43.Git 删除远程分支 git push origin :branchName 44.Git 将新分支推送到远程服务器: git push -u origin mynewfeature 45.打印历史记录中最后一次cat命令: !cat:p 46.运行历史记录里最后一次cat命令: !cat 47.找出/home/user下所有空子目录: find /home/user -maxdepth 1 -type d -empty 48.获取test.txt文件中第50-60行内容: < test.txt sed -n '50,60p' 49.运行最后一个命令(如果最后一个命令是mkdir /root/test, 下面将会运行: sudo mkdir /root/test): sudo !! 50.创建临时RAM文件系统 - ramdisk (先创建/tmpram目录): mount -t tmpfs tmpfs /tmpram -o size=512m 51.Grep whole words: grep -w "name" test.txt 52.在需要提升权限的情况下往一个文件里追加文本: echo "some text" | sudo tee -a /path/file 53.列出所有kill signal参数: kill -l 54.在bash历史记录里禁止记录最后一次会话: kill -9 $$ 55.扫描网络寻找开放的端口: nmap -p 8081 172.20.0.0/16 56.设置git email: git config --global user.email "me@example.com" 57.To sync with master if you have unpublished commits: git pull --rebase origin master 58.将所有文件名中含有"txt"的文件移入/home/user目录: find -iname "*txt*" -exec mv -v {} /home/user \; 59.将文件按行并列显示: paste test.txt test1.txt 60.shell里的进度条: pv data.log 61.使用netcat将数据发送到Graphite server: echo "hosts.sampleHost 10 `date +%s`" | nc 192.168.200.2 3000 62.将tabs转换成空格: expand test.txt >Test1.txt
63.Skip bash history:
< space >Cmd
sixty-four。 Go to the previous working directory:
Cd-
sixty-five。 Split the large tar.gz file (each 100MB) and merge it back:
Split-b 100m / path/to/large/archive / path/to/output/filescat files* > archive
sixty-six。 Use curl to get HTTP status code:
Curl-sL-w "% {http_code}\\ n" www.example.com-o / dev/null
sixty-seven。 Set the root password to strengthen the MySQL security installation:
/ usr/bin/mysql_secure_installation
sixty-eight。 When Ctrl + c doesn't work:
Ctrl +\
sixty-nine。 Get the file owner:
Stat-c% U file.txt
70.block device list:
Lsblk-f
seventy-one。 Find the file with a space at the end of the file name:
Find. -type f-exec egrep-l "+ $" {}\
seventy-two。 Find files with tab indents in their names
Find. -type f-exec egrep-l $& apos;\ tgift apos; {}\
seventy-three。 Print a horizontal line with "=": copy it all and put it in your notes.
Printf & apos;0s\ nroomapos; | tr & apos; & apos; =
Article source: Ma GE Education
Official Wechat: Ma GE linux operation and maintenance staff
Technology Exchange Group: 485374463
Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.
Views: 0
*The comments in the above article only represent the author's personal views and do not represent the views and positions of this website. If you have more insights, please feel free to contribute and share.
Continue with the installation of the previous hadoop.First, install zookooper1. Decompress zookoope
"Every 5-10 years, there's a rare product, a really special, very unusual product that's the most un
© 2024 shulou.com SLNews company. All rights reserved.